Home / 779,549.10-1,170,307.80-420,006.30

Finding the Fourth Proportional to 779,549.10, 1,170,307.80 and 420,006.30

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Solution

The fourth proportional to 779,549.10, 1,170,307.80 and 420,006.30 is: 630,539.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    779,549.10 : 1,170,307.80 = 420,006.30 : x
  2. Step 2: Convert to fraction form
    779,549.10/1,170,307.80 = 420,006.30/x
  3. Step 3: Cross multiply
    779,549.10x = 1,170,307.80 × 420,006.30
  4. Step 4: Simplify right side
    779,549.10x = 491,536,648,939.14
  5. Step 5: Solve for x
    x = 491,536,648,939.14/779,549.10
  6. Step 6: Final answer
    x = 630,539.69

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.